Hotel secrets have revealed some horrifying things over the years regarding cleanliness and safety.

From dirty hotel room glasses and kettles to peephole cameras, it is a wonder that people still choose to stay in them.

Another shocking secret has revealed why asking for a double room is often the better choice than a king size one.

It all comes down to the size of the room.

Zeev Sharon explained on Quora that the allure of a king size room may not be all as it seems.

She wrote: “Rooms with double beds are usually larger than rooms with king beds.”

This could be due to double rooms sometimes being a ‘double-double’, meaning two double beds, whilst king size rooms rarely have more than one king-sized bed.

Guests trying to decide on whether they want more room space or a bigger bed should take note when next requesting a room.

Zeev also explains why the bathroom reveals more about the quality of the room than anything else.

She continued: “The quality of a guest room is often measured by the number of fixtures in the bathroom (the bathroom is by far the most expensive room to build). "

The fixtures include the toilet, sink, shower and bath; the more the fixtures, the higher quality.

Zeev explained that a standard has just three fixtures whilst some may have up to five with “two sinks, a bath, stand-alone shower and a toilet”.